I tried deleting it from /etc/apt/sources and /etc/apt/sources.d, but whenever I run apt-get install for any package , it gives the following output in the end
Setting up getdeb-repository (0.1-1~getdeb1) ...
--2016-05-16 17:16:03-- http://archive.getdeb.net/getdeb-archive.key
And the "getdeb" entries magically come back in /etc/apt/sources.d. Is there any fix to remove "getdeb" completely from my system?